5 inch PMD cone woofer and 1 inch aluminum dome tweeter in each speaker Waveguide horns reduce reflected sound while directing more sound waves to your ears 60 watts nominal power; 150 watts music power Monster Cable internal wiring ensures clean, clear signal Each speaker measures 7 to 7/8 by 12 to 5/8 by 8 to 3/8 inches (width by height by depth)